Car-axle-box lid.



PATENTED JAN. 1, 1907.

W. G. DUNHAM. OAR AXLE BOX LID. APPLICATION FILED 00130, 1905.

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UNITED STATES PATENT OFFICE.

CAR-AXLE-BOX LID.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed October 30,1905. Serial!- 285,016.

To all whom, it may concern.-

' Be it known that 1,-WILLIAM G. DUNHAM,

a citizen of the United States, residing at Chicago, in the countyv ofCook and State'of Illinois, have invented certain new and usefulImprovements in Car-Axle-Box Lids; and I do hereby declare-the folloglto be a. full, clear, and exact description of t e invention, such aswill enable. others skilled in the art to which it appertains to makeand use the same.

My present invention relates to car-axlebox lidsv of the character setforth and broadly claimed in my Letters Patent No. 803,155, issuedOctober 31, 1905, entitled CarAxle-Box' Lid; and it: consists of thenovel devices and combinations of devices hereinafter described, anddefined in the claims I The invention is illustrated in the accompanyingdrawings, wherein like characters indicate like parts throughout theseveral views.

Referring to the drawings, Figure 1 is a view principally in sideelevation, but with some arts sectioned v and others broken away, 1lustrating my invention as applied to a car-axle box. Fig. 2 is avertica section taken approximately on the line a m of Fig. 1, someparts left in full. Fig. 3 is a section on the same line as Fig. 2, butshowin the lid turned into its open position; and Fig.4 is a detail insection on-Jthe line 00 r of Fig. 1, some parts being removed.

l Thenumeral 1 indicates the axle-box, and the numeral 2 a portion ofthe axle. The

7 box in line with its'mouth-opening is formed with atransversely-extended upwardly-13rd jectingfulcrum rib. 3 and with apair of outw'ardly-projecting laterally-spaced bearing lugs 4, which,asshown, are cast integral with the said rib 3. These l'ugs 4 havealined erforations 5, and one thereof is slotted at 6 or a pur ose whichwill presently appear.

The li 7, which is preferably constructed of malleable iron and 1sbulged outward at 8 and inward at 9, is formed at its extreme upper edgewith a semicylindrioal fulcrum-seat 10, that engages and rotates uponthe rounded upper edge of the'fulcrum-rib 3. Said lid is also formedwith a perforated lug 11, that projects inward from the central portionof its bulge '9. Webs 12, formed on the sides of the lid at the. ends ofthe fulcrumseat 10, engage with the ends of the-fulcrumribs 3 and holdthe lid in working position against transverse sliding movements.

The numeral 13 indicates a bolt which is or head portion 14, that isjournaled in the perforations 5 of the two bearin -lugs 4. The bolt andits head constitute w. at may be termed a T-bolt, and the said-head 14is connected to the body-bolt 13 by a thin transversely-extended neck15, and the said bolt is provided adjacent to said neck with a flange16. The free end of the bolt 13 works loosely tlfrough the perforatedlug 11. of the lid, and below and outward of said lug it is providedwith a stop -pin 17. A coiled spring 18 is placed on the bolt 13 and iscom-- pressed between the flange 16 thereof and the said perforated lug11.

The following im o'rtant relation of the,

parts above describe should be noted The spring 18 of the thrust deviceexerts a strain on a line that obliquely intersects the mouth of thebox, and it finds its fixed base of reaction against the box-lugs 4 andits movable base of reaction against the perforated lug 11 of the lid.l/Vith this arrangement the sprin exerts a force which not only tends tohol the lid closed, but which seats the lid a ainst the mouth of the boxatits upper an side portions, as well as its lower portion.

In all positions of the lid the spring 18 exerts a force which tends tomaintain engagement between the fulcrum-seat 10 of the lid and thefulcrum-rib 3 of the box." In moving the lid from its closed position(shown in Fig. 2) into its extreme open position (shown in Fig. 3) theline of strain of said spring 18 is carried by adead-center with respectto the axis of the bolt-head 14 and the axis of 3, and when it reachesthe position shown in 3 the line of strain of said spring is below thesaid fulcrum-rib, so that the spring then tends to hold the lid in itsopen position. the lid is limited by engagement of the stop- The extremeopening movement ofprovided with a transversely-extended shaft pin 17with the perforated lug 11 of the lid,

and in this position of the lid the body of the fulcrum-seat 10 of thelid is forced off from the rounded edge of the fulcrum-rib 3, and thelower edge only of said seat is thrown against the said fulcrum-rib,thereby reduc-' ing the leverage action of the spring 18 at this time."Vvhen the lid is in its closed position, the stop-pin 17 of the bolt 13stands slightly out of engagement with the lug 11' of the lid, so thatthe spring may then exert a force tending to hold the lid closed. In allintermediate positions of the lid the spring 18 is compressed toagreater extent than shown either in Fig. 2 or in Fig. 3, and thestop-pin 17 is then carried'iarther away from the said lug 11.

When the lid is moved from its closed to its open position, or viceversa, the spring thrust device gradually changes its angular position,both with respect to the box and with respect to the lid, and is movedfrom one side to the other from a dead-center, as already stated.

When the lid is in its open position, (shown in Fig. 3,) it may beremoved from working position by forcing it inward, so as to carry theseat 10 away from and over the rounded edge of the fulcrum-rib 3. Thisof course must be done against the tension of the spring 18, and a veryconsiderable force will be required to accomplish this result. When thelid is disengaged from theiulcrum-rib 3 and the stop-pin 17 is removedfrom the bolt 13, the spring 18 will throw the perforated lug 11 offfrom said bolt, and the said lid will then be entirely disconnected fromthe box. When the T-shaped bolt 13 14 is then turned downward. to anintermediate position, .so that its flat neck 15 alines with the slot 6of the lug 4, the said neck may be passed through said slot 6 by alateral movement of said bolt, and the said bolt in this way be easilyremoved from working position. It may of course be applied to the lugsby a reverse action. Of course, if, desired, more than one of the saidT-bolts and cooperating springs may be employed in connection with the.single box and lid, in which case the said T-bolts will be located withtheir shaft-like heads 14 in axial alinement.

The lid and the thrustdevice described are of very simple constructionand of small cost. They may be very quickly assembled or disconnectedand have no parts that are liable to get out of order.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows: I

1. The combinationwith an axle-box, of a lid hinged thereto, by means ofa separable hinge permitting the lid to be lifted from the box, and aspring thrust device obliquely intersecting the mouth of the box, whenthe lid is closed, said spring thrust device reacting.

against the lid and a fixed base of resistance on the box, said springthrust device having an angular movement both in respect to the lid andthe box, and exerting a strain tending to maintain engagement betweenthe hinge members, substantially as described.

2. The combination with. an axle-box, of a lid hinged thereto, by meansof a separable hinge permitting the lid to be lifted from the box, and aspring thrust device obliquely intersecting the mouth of the box, whenthe lid is closed, said spring thrust device reacting against aninwardly-projected intermediate portion of the lid and a fixed base ofresistance on the box, said spring thrust device having an angularmovement both in respect to the lid and the box, and exerting a straintending to maintain engagement between the hinge members, substantiallyas described.

3. The combination. with an axle-box having a fulcrum-rib above itsmouth-opening, of a lid having at its upper edge a seat that engagessaid fulcrum-rib, to form the lid-hinge, a spring thrust deviceobliquely intersecting the mouth of the box, when. the lid is closed,and reacting against an intermediate inwardly-projecting portion of thelid and against a base of resistance on the box, said spring thrustdevice having an angular movement both in respect to the lid and thebox, when said lid is moved, substantially as described. 1

4. The combination with an axle-box having a fulcrum-rib above itsmouth-opening, of a lid having an open seat loosely engaging saidfulcrum-rib, a bolt pivoted to lugs on the box and working looselythrough an inwardlyprojecting lug on the intermediate portion of thelid, a spring on said bolt reacting against said bolt and against thelug on said lid, said bolt and spring. having angular movement both inrespect to the box and to the lid, said spring tending to maintainengagement betweensaid fulerum-rib and seat, substantially as described.

5. The combination with an axle-box and a lid connected thereto by aseparable hin e,

' said box having outwardly-projecting per orated bearing-lugs, one ofwhich is slotted, and said ,lid having an inwardly-projecting perforatedlug, of a T-bolt havin a shaftlike head seated in the perforatedbearinglugs of said box, and having a flattened neck adapted to passthrough. said slotted lug under a lateral movement of said T-bo-lt, saidT-bolt being passed through the lug of said lid, and a coiled spring onsaid bolt compressed between a collar thereon and the lug of said lid,substantially as described.

- 6. The combination with an axle-box and a lid hinged thereto, said boxhaving perforated bearingdugs, and saidlid having an inwardly-projectingperforated bearing-lug,

of a T-bolt having its head pivoted in the bolt, for limiting theopening movement of lugs .of said box and having its free end the box,substantially as described. to passed through the lug of said lid, a srin In testimony whereof I allix my signature on said bolt pressingagainst the lug ot said in preseiioe'of two witnesses.

lid, the thrust device made up of said bolt WILLIAM G. DUNHAll I. andspring being movable from one side to Witnesses: the other of a.dead-center under movements S. BLANCHE KLAUCK,

of said lid, and a stop at the outer end of said J. W. KLAUGK.

